Joe saw a sketchnote I had done on this talk and asked if I could help him out…

He was considering revamping his blog (and maybe other of his sites later) and asked if he could use
one of my illustrations - a portrait of him - on the site. Joe has indirectly helped me a lot over the years
through blog posts and videos of his talks so, of course, I said yes. The result is below
or you can see the real thing here